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GPUMatrix.h
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1 /*
2  * Copyright (c) 2014, Shogun Toolbox Foundation
3  * All rights reserved.
4  *
5  * Written (W) 2014 Khaled Nasr
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions are met:
9 
10  * 1. Redistributions of source code must retain the above copyright notice,
11  * this list of conditions and the following disclaimer.
12  *
13  * 2. Redistributions in binary form must reproduce the above copyright notice,
14  * this list of conditions and the following disclaimer in the documentation
15  * and/or other materials provided with the distribution.
16  *
17  * 3. Neither the name of the copyright holder nor the names of its
18  * contributors may be used to endorse or promote products derived from this
19  * software without specific prior written permission.
20 
21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
22  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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33 
34 #ifndef __GPUMATRIX_H__
35 #define __GPUMATRIX_H__
36 
37 #include <shogun/lib/config.h>
38 
39 #ifdef HAVE_VIENNACL
40 #ifdef HAVE_CXX11
41 
42 #include <shogun/lib/common.h>
43 #include <memory>
44 
45 #ifndef SWIG // SWIG should skip this part
46 namespace viennacl
47 {
48  template <class, class, class, class> class matrix_base;
49  template <class> class const_entry_proxy;
50  template <class> class entry_proxy;
51  class column_major;
52 
53  namespace backend
54  {
55  class mem_handle;
56  }
57 }
58 
59 namespace Eigen
60 {
61  template <class, int, int, int, int, int> class Matrix;
62 }
63 
64 namespace shogun
65 {
66 
67 template <class> class SGMatrix;
68 
80 template <class T> class CGPUMatrix
81 {
82 
83  typedef viennacl::matrix_base<T, viennacl::column_major, std::size_t, std::ptrdiff_t> VCLMatrixBase;
84  typedef viennacl::backend::mem_handle VCLMemoryArray;
85 
86  typedef Eigen::Matrix<T,-1,-1,0,-1,-1> EigenMatrixXt;
87 
88 public:
90  typedef T Scalar;
91 
93  template <typename ST> using container_type = CGPUMatrix<ST>;
94 
96  CGPUMatrix();
97 
103  CGPUMatrix(index_t nrows, index_t ncols);
104 
113  CGPUMatrix(std::shared_ptr<VCLMemoryArray> mem, index_t nrows, index_t ncols,
114  index_t mem_offset=0);
115 
117  CGPUMatrix(const SGMatrix<T>& cpu_mat);
118 
120  operator SGMatrix<T>() const;
121 
122 #ifdef HAVE_EIGEN3
123 
124  CGPUMatrix(const EigenMatrixXt& cpu_mat);
125 
127  operator EigenMatrixXt() const;
128 #endif // HAVE_EIGEN3
129 
131  inline VCLMatrixBase data()
132  {
133  return vcl_matrix();
134  }
135 
137  inline uint64_t size() const
138  {
139  const uint64_t c=num_cols;
140  return num_rows*c;
141  }
142 
146  VCLMatrixBase vcl_matrix();
147 
149  void zero();
150 
155  void set_const(T value);
156 
158  void display_matrix(const char* name="matrix") const;
159 
166  viennacl::const_entry_proxy<T> operator()(index_t i, index_t j) const;
167 
174  viennacl::entry_proxy<T> operator()(index_t i, index_t j);
175 
181  viennacl::const_entry_proxy<T> operator[](index_t index) const;
182 
188  viennacl::entry_proxy<T> operator[](index_t index);
189 
190 private:
191  void init();
192 
193 public:
195  std::shared_ptr<VCLMemoryArray> matrix;
196 
200  index_t offset;
201 
203  index_t num_rows;
204 
206  index_t num_cols;
207 };
208 
209 }
210 #endif // SWIG
211 
212 #endif // HAVE_CXX11
213 #endif // HAVE_VIENNACL
214 #endif // __GPUMATRIX_H__
int32_t index_t
Definition: common.h:62
Definition: SGMatrix.h:20
all of classes and functions are contained in the shogun namespace
Definition: class_list.h:18

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